What is main difference between AC and DC current.

 

AC and DC are two types of electrical current that are used for different purposes in various applications. While both types of current are used to transfer electrical energy, there are some key differences between them that are important to understand.

One of the main differences between AC and DC current is the direction of the current flow. In AC current, the direction of the current flow changes periodically. This means that the current flows in one direction for a period of time, and then it changes direction and flows in the opposite direction. The period of time that it takes for the current to change direction is called the frequency, and it is measured in hertz (Hz). In the United States, the standard frequency is 60 Hz, which means that the current changes direction 60 times per second.

In contrast, DC current has a constant direction of current flow. This means that the current flows in one direction only, and it does not change direction. DC current is typically used for charging batteries and in electronic devices.

Another difference between AC and DC current is the ease of transmission over long distances. AC current can be easily transformed to different voltages, which makes it ideal for transmission over long distances. This is because it can be transformed to high voltages, which reduces the amount of energy lost during transmission. In contrast, DC current is not easily transformed, so it is not typically used for transmission over long distances.

AC current is also widely used in the power grid, because it is more efficient than DC current in the transmission and distribution of electricity over long distances. AC current can be easily transformed to different voltages, which allows it to be transmitted over long distances with minimal energy loss. On the other hand, DC current is not easily transformed, so it is not typically used for transmission over long distances.

In conclusion, AC and DC are two types of electrical current that are used for different purposes in various applications. The main difference between them is the direction of the current flow, with AC current changing direction periodically and DC current flowing in one direction only. Additionally, AC current is typically used for transmission over long distances because it can be easily transformed to different voltages, while DC is used for charging batteries and in electronic devices.